lewisou

	// Search the record in the database by the file name
	recordInDB, found := search(local.FilePath)

	var compareRs int // The resule, which one to use, client side version or server side version
	var execRs bool // If the operation is failed due to concurrency, so the client side can re do the request again
	var newVersion int64 // Tell the client side the result of new version

	// If the file previously exists
	if found {
		// The compare logic to find out who wins (client or server)

lewisou

	usr, err := user.Current() // Get the operating system user.
	if err != nil {
		log.Fatal( err )
	} else {
		monitorFolder := path.Join(usr.HomeDir, monitorFolderName) // A particular folder in the home directory.

		// Make sure the folder exists
		if ensureFolder(monitorFolder) {

			// fileStore is an object that caches the folder status in memory

lewisou

Feature: Create a new check
	Create a new check with sample data.
	Sample data is a subset of real data at a particular time point and should fullfill bellow constrants:
	location: should include status inactive and active.
	item: should include status inactive, active.
	item group: should include type NP and not NP. (but this time, we don't find NP quantities in whole real data)
	Inventory (frozen quantity): should be fall in all categories above.

	Real data exported on 2013/11/28, (don't find NP quantities...) and we generate sample data in R.

lewisou

import Data.List -- sortBy

myLength :: [a] -> Int
myLength []     = 0
myLength (x:xs) = 1 + (myLength xs)

meanOfList [] = 0
meanOfList xs = (fromIntegral (listSum xs)) / (fromIntegral (myLength xs))
    where listSum []     = 0
          listSum (e:es) = e + (listSum es)

lewisou

# Add this line into your Gemfile.
gem 'feedzirra', '~> 0.0.24'

# Fetch and Parse, we take javascript weekly as an example.
feed = Feedzirra::Feed.fetch_and_parse('http://javascriptweekly.com/rss')

# Basic information of the feed.
feed.title
feed.url
feed.feed_url

lewisou

# Add the line to the Gemfile of your application.
gem 'rest-client', '~> 1.6.7'

# In your code, we take website www.designbombs.com as an example to scrape all images.
rs = []
RestClient.get('http://www.designbombs.com/') do |response, _req, _res| 
  if response.code == 200
    response.to_s.scan(/<img[^>]+src\s*=\s*['"]([^'"]+)['"][^>]*>/) do |url|
      rs << url
    end

lewisou

function elementSupportsAttribute(element, attribute) {
  var test = document.createElement(element);
  if (attribute in test) {
    return true;
  } else {
    return false;
  }
};

$(document).ready(function(){